Anatomical study of the maxillary tuberosity using cone beam computed tomography

Area of Science:

• Dentistry
• Orthodontics
• Anatomy

Background:

• The maxillary tuberosity (MT) is a key anatomical landmark for orthodontic miniscrew placement.
• Understanding MT dimensions and variations is essential for successful surgical outcomes.

Purpose of the Study:

• To investigate the width, length, and height of the maxillary tuberosity (MT).
• To analyze correlations between MT dimensions, age, and sex.
• To identify distinct anatomical types of the MT for optimal miniscrew positioning.

Main Methods:

• Cone beam computed tomography (CBCT) scans of 39 patients (21 males, 18 females; mean age 39.7 years) were analyzed.
• Measurements of 78 maxillary tuberosities were performed using Invivo Dental 5 software.
• Intraobserver and interobserver reliability were assessed and found to be good.

Main Results:

• Significant differences in MT width were observed between males and females.
• MT dimensions correlated with age: older patients had greater width and length, but reduced height.
• Three distinct anatomical types of the MT were identified based on age.

Conclusions:

• Maxillary tuberosity dimensions are significantly influenced by patient age and sex.
• Recognizing these age and sex-dependent anatomical variations is critical for accurate miniscrew placement in orthodontics.